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authorMichał Mirosław <mirq-linux@rere.qmqm.pl>2010-11-30 06:38:00 +0000
committerDavid S. Miller <davem@davemloft.net>2010-12-06 12:59:04 -0800
commit7903264402546f45f9bac8ad2bfdb00d00eb124a (patch)
tree32076a169b37ce9c98916ed2d702de5cab1aeb6c /net/core/ethtool.c
parent900d495a189dc3ff5952b98a77d18e3018f8286c (diff)
net: Fix too optimistic NETIF_F_HW_CSUM features
NETIF_F_HW_CSUM is a superset of NETIF_F_IP_CSUM+NETIF_F_IPV6_CSUM, but some drivers miss the difference. Fix this and also fix UFO dependency on checksumming offload as it makes the same mistake in assumptions. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Jon Mason <jon.mason@exar.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/ethtool.c')
-rw-r--r--net/core/ethtool.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 956a9f4971cb..d5bc28818883 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1171,7 +1171,9 @@ static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
return -EFAULT;
if (edata.data && !(dev->features & NETIF_F_SG))
return -EINVAL;
- if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
+ if (edata.data && !((dev->features & NETIF_F_GEN_CSUM) ||
+ (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+ == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
return -EINVAL;
return dev->ethtool_ops->set_ufo(dev, edata.data);
}